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Published on: July 13, 2014
Impact of Developmental Alcohol Exposure on Sleep Physiology
Valentina Licheri1, Jonathan L Brigman2
1Department of Neurosciences and New Mexico Alcohol Research Center, School of Medicine, University of New Mexico Health Science Center, Albuquerque, NM, USA. vlicheri@salud.unm.edu.
Insights
Developmental alcohol exposure significantly disrupts sleep in children with fetal alcohol spectrum disorders (FASDs). Understanding the molecular basis of these sleep disturbances is crucial for effective interventions.
Area of Science:
- Neuroscience
- Sleep Medicine
- Developmental Pediatrics
Background:
- Sleep disturbances are prevalent in fetal alcohol spectrum disorders (FASDs).
- Developmental alcohol exposure impacts brain development, affecting sleep physiology.
- Sleep disruptions correlate with cognitive impairments in FASD patients.
Purpose of the Study:
- To summarize clinical and preclinical findings on alcohol exposure and sleep.
- To highlight the prevalence and types of sleep disturbances in FASD.
- To identify gaps in understanding the mechanisms of alcohol-induced sleep issues.
Main Methods:
- Review of clinical studies on sleep in FASD patients.
- Summary of preclinical findings from animal models of FASDs.
- Analysis of the correlation between sleep-wake disruptions and cognitive function.
Main Results:
- High prevalence of sleep disturbances (e.g., fragmentation, anxiety, resistance) in FASD.
- Confirmed link between prenatal alcohol exposure, brain alterations, and sleep problems.
- Significant correlation between sleep-wake cycle disruption and cognitive deficits.
Conclusions:
- Prenatal alcohol exposure leads to significant sleep disturbances in individuals with FASDs.
- Molecular mechanisms underlying these sleep disturbances remain poorly understood.
- Further research is needed to elucidate the physiological and molecular pathways involved.
Abstract:
The present chapter summarizes the clinical and preclinical findings collected to date, showing the impact of developmental alcohol exposure on sleep physiology. Sleep is a complex physiological process that plays a pivotal role in maintaining overall health and well-being via its involvement in regulating physiological, cognitive, and emotional functions. Clinical studies consistently report a high prevalence of sleep disturbances in children and adolescents diagnosed with fetal alcohol spectrum disorders (FASDs), including short sleep duration, sleep anxiety, bedtime resistance, increased sleep fragmentation, and parasomnias. It is established that alcohol consumption during gestation impairs brain development, leading to structural and functional alterations that may affect sleep architecture. In addition, clinical investigations have found a significant correlation between sleep-wake cycle disruptions and cognitive impairments after developmental alcohol exposure, and sleep disturbances are increasingly recognized as a substantial problem among FASD patients. However, the molecular mechanisms underlying these disturbances are poorly understood. Surprisingly, few studies with animal models of FASDs have characterized the effect of developmental ethanol exposure on sleep physiology, and these have focused on high doses. This chapter provides an overview of the current knowledge, reports the sleep disturbances in FASD patients, and then summarizes the gap in understanding the molecular and physiological mechanisms.
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